Related Experiment Video
Updated: Jun 13, 2026

Long Term Chronic Pseudomonas aeruginosa Airway Infection in Mice
Published on: March 17, 2014
Pseudomonas aeruginosa and the host pulmonary immune response
Patricia J Dubin1, Jay K Kolls
1Children's Hospital of Pittsburgh, Suite 3765, 3705 Fifth Avenue, Pittsburgh, PA 15213, USA. patricia.dubin@chp.edu
Abstract:
Pseudomonas aeruginosa is a highly adaptable, opportunistic pathogen that is commonly found in the environment. It can infect a number of sites in the body and disseminate. It can cause both acute and chronic pulmonary infection and the acuity of infection and accompanying inflammatory phenotype is determined, for the most part, by the host. Although P. aeruginosa has been a successful opportunist in the context of a number of different disease states, it has been best studied in the context of cystic fibrosis (CF). The adaptability of P. aeruginosa has enabled it to adjust quickly to the CF airway, transitioning from initial colonization to chronic infection. The organism quickly expresses virulence factors that allow it to circumvent some elements of the host immune response and, even more importantly, quickly develops antimicrobial resistance. In the case of CF, chronic infection resulting in progressive lung damage, coupled with antimicrobial resistance, becomes an increasingly important issue as individuals with CF live longer. It is for these reasons that both organism- and host-targeted immunotherapies are being increasingly explored.
Insights
Pseudomonas aeruginosa is an adaptable pathogen causing infections, particularly in cystic fibrosis (CF). Its rapid adaptation and resistance underscore the need for novel immunotherapies targeting both the pathogen and host immune responses.
Area of Science:
- Microbiology
- Immunology
- Pulmonary Medicine
Background:
- Pseudomonas aeruginosa is an opportunistic pathogen prevalent in the environment.
- It causes acute and chronic infections, with host factors influencing disease severity.
- P. aeruginosa is extensively studied in cystic fibrosis (CF) due to its adaptability to the CF airway.
Purpose of the Study:
- To explore the adaptability of P. aeruginosa in the context of chronic infections.
- To highlight the development of virulence factors and antimicrobial resistance by P. aeruginosa.
- To emphasize the growing importance of immunotherapies for P. aeruginosa infections, especially in CF.
Main Methods:
- The study reviews the adaptability and virulence of P. aeruginosa.
- It examines the transition from colonization to chronic infection in CF airways.
- Antimicrobial resistance development and host immune interactions are analyzed.
Main Results:
- P. aeruginosa rapidly adapts to the CF lung environment.
- The pathogen expresses virulence factors and develops antimicrobial resistance.
- Chronic infection leads to progressive lung damage in CF patients.
Conclusions:
- The adaptability and resistance of P. aeruginosa pose significant challenges in CF care.
- Host- and organism-targeted immunotherapies are crucial for managing chronic P. aeruginosa infections.
- Further research into immunotherapies is warranted given increased longevity in CF individuals.
Related Concept Videos
Pneumonia I: Introduction
Pneumonia I: Introduction
Risk Factors
Various factors influence the likelihood of developing pneumonia. Age plays a crucial role, with infants, children under two, and individuals over 65 at increased risk due to their...
Atypical Pneumonia
Defense Against Bacterial Pathogens
Phagocytes
Phagocytes are the frontline soldiers of the immune system. They include neutrophils and macrophages. Neutrophils are the most abundant type of white blood cell and are quickly mobilized to the site of infection. Macrophages are larger cells that patrol...
Microbiota of the Respiratory Tract
Pulmonary Tuberculosis II
Here is a detailed explanation of its pathophysiology:
Transmission: The process begins when a person inhales droplet nuclei containing M. tuberculosis. These are typically released into the air when an individual with pulmonary or...

